X is a Y which/for Z. It’s for V.
Replace X with your product name.
Replace Y with one of the choices:
If it’s something on your computer, it’s a “program” > or “application”.
If it needs WWW, and I need a browser for it, it’s a “service”
It it needs both, it’s a “solution” or “environment” (and perhaps a > service too)
If it needs hardware, it’s a “platform” or an “infrastructure”
Replace Z with a short sentence which must have one of the verbs:
Replace V with your potential customer name.
So let’s try:
X = Docker
Y = Solution
Z = Sandboxing programs
V = Developers and sysadmins.
Docker is an environment for sandboxing programs. It’s for developers and sysadmins.